engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Strength of Materials Torsion of Shaft
If D and d are external and internal diameters of a circular shaft respectively, its polar moment of inertia is
1
\(\frac{\pi(D^4-d^4)}{2}\)
2
\(\frac{\pi(D^4-d^4)}{4}\)
3
\(\frac{\pi(D^4-d^4)}{64}\)
4
\(\frac{\pi(D^4-d^4)}{32}\)
5
\(\frac{\pi(D^4-d^4)}{16}\)